Steam-heating apparatus



2 Sheets-Sheet 1.

(No Model.) (7

G. A. BARNARD. STEAM HEATING APPARATUS.

No. 429,182. Patented June a, 1890.

T @i a WWW! @WCo SMAD 1 ins 0a., mmo-umu, WASHINGTON n c (No Model.) 2 Sheets-Sheet 2.

G. A. BARNARD.

STEAM HEATING APPARATUS.

No. 429,182. Patented June a, 1890.

f v f W0 74 MM m: uonms PETERS 20.. wonrumm, vusmmsmu. n. c.

UNITED STATES PATENT OFFICE,

GEORGE A. BARNARD, OF HARTFORD, CONNECTICUT.

STEAM-HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 429,182, dated June 3, 1890.

Application filed. March 14, 1887.

Serial No. 230,786. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE A. BARNARD, of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and usefulImprovements in Steam-Heating Apparatus, of which the following is a full, clear, and exact description, whereby any one skilled in the art can make and use the same.

The object of my invention is to provide an apparatus for heating by the circulation of steam in a suitable system of pipes and radiators, in which system the How of the steam is caused or promoted by a device at the end of the system of return-pipes.

To this end my invention consists in the combination, in a steam-heating apparatus, of supply-pipes, radiators, a return-pipe, and a suction device at the end of the return-pipe operated by a flowing stream of steam through the ejector device, as more particularly hereinafter described, and pointed out in the claim.

Referring to the drawings, Figure l is a diagram view of a steam-heating apparatus asa whole, in which my within described improvement is embodied, the suction device being shown at some distance from the locomotive-boiler for the purpose of making clear the relative arrangement of the parts. Fig. 2 is a detail view, in vertical section, through the front part of a locomotive-engine, showing the cylinders and exhaust-pipes in section. Fig. 3 is a detail plan view of part of the c011- necting-pipes used in a locomotive with a three-way valve cut in section.

In the accompanying drawings the letter f denotes the shell of a locomotive-boiler; g and h, the cylinders thereof; g and h, the exhaustoutlets from the cylinders, that are of ordinary construction and meet Within the smokeboX or combustion-chamber just below the smoke-stack, as in the ordinary forms.

At suitable and convenient points in the length of the exhaust-pipes g and h openings z are made, and in them or to them are connected the ends of the Y j of the supplypipes of a' steam-heating system adapted to conduct steam to the several cars making up a train.

The particular form and arrangement of the piping of the circulatory system used in the cars is not material to my improvement, it being requisite, however, that there should be no permanent opening in the return-pipe it, that leads back to the engine through the shell and into the draft-chamber k through an opening in the wall of the tube N, that surrounds the nozzles or discharge-outlet of the exhaust pipes g h.

The operation of my device is as follows: The discharge of exhaust-steam from the cylinders through the exhaust-tubes into the tube k causes an induced current through the drip or return pipe 70, that draws upon the supply-pipes j, and causes a part of the exhaust-steam to pass through the opening 2 into the heating system of pipes.

Live steam may be utilized as the heating medium by the following arrangement of parts: When the engine is not in operation, a connecting-pipe m is provided leading from the boiler or steam-dome into the three-way cock at, that may be operated to provide the supply-pipesj with live steam, exhaust-steam, when used, being supplied through the branch pipes 71 when the engine is in operation. The pipe m may be provided with a suitable cock m by means of which the live steam may be shut oif from the pipe m, and the cock may be located in posit-ion easily accessible from the cab of the locomotive. The supply-pipe j has connected to it, or is formedinto suit-able coils or heaters j, that are arranged in convenient position in the cars. The return end of the lastcoil, or of a return-pipe common to all of the coils, is connected with the suctionreturn 7:, and also with a steam-trapl or suitable vale at the end of the returns, that is provided to automatically drain the pipes of any surplus water of condensation that might otherwise accumulate in the end of the pipe. It will be understood that this steam-trap, whether it be in form of a U-syphon or S, has a seal sufficient to prevent the inflow of air past the trap when the suction device is drawing on the system through the pipe h.

I claim as my invention- In a locomotive engine, in combination with the cylinders having exhaust-pipes terminating' in a common nozzle, the supplypipe of a steam-heating system branching from the said exhaust-pipes, and the returnpipe of the said system opening into an annulznchamber formed about the nozzle of turn-pipe of the heating system, all substantially as described.

GEORGE A. BARNARD.

Witnesses:

exhaust-steam causes a draft throug'l'l the re- F. D. SCHUYLER. 

